EL CID "B"

Oil · District 1 · Lease #5393

Operator: SANCHEZ-O'BRIEN OIL & GAS CORP.

Cum Oil

18k BBL

Cum Gas

0 MCF

Wells

2

Production

1993-01 — 2001-12

Peak Month

1998-06

Production History

Cum Oil: 18,288 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,590 BBL/mo

Di (annual)

753.0%

b-factor

0.4

EUR

4,255 BBL

R-squared

0.555

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7SANCHEZ-O'BRIEN OIL & GAS CORP.39,0001998-05-01
3ENERCO EXPLORATION & MGMT. CO.17,3001977-07-20
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